Re: Bootstrap failure with graphite

[Richard Guenther <richard dot guenther at gmail dot com>]

On Sun, Oct 25, 2009 at 12:24 PM, Steven Bosscher <stevenb.gcc@gmail.com> wrote:
> On Sun, Oct 25, 2009 at 12:18 PM, Richard Guenther
> <richard.guenther@gmail.com> wrote:
>> On Sun, Oct 25, 2009 at 12:08 PM, Steven Bosscher <stevenb.gcc@gmail.com> wrote:
>>> Hi,
>>>
>>> I tried to bootstrap gcc this morning and got the following build failure:
>>>
>>> /home/stevenb/devel/build/./prev-gcc/xgcc
>>> -B/home/stevenb/devel/build/./prev-gcc/
>>> -B/opt/x86_64-unknown-linux-gnu/bin/
>>> -B/opt/x86_64-unknown-linux-gnu/bin/
>>> -B/opt/x86_64-unknown-linux-gnu/lib/ -isystem
>>> /opt/x86_64-unknown-linux-gnu/include -isystem
>>> /opt/x86_64-unknown-linux-gnu/sys-include ? ?-c ?-g -O2 -gtoggle
>>> -DIN_GCC ? -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
>>> -Wmissing-prototypes -Wmissing-format-attribute -pedantic
>>> -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror
>>> -Wold-style-definition -Wc++-compat -fno-common ?-DHAVE_CONFIG_H -I.
>>> -I. -I../../trunk/gcc -I../../trunk/gcc/. -I../../trunk/gcc/../include
>>> -I../../trunk/gcc/../libcpp/include ?-I../../trunk/gcc/../libdecnumber
>>> -I../../trunk/gcc/../libdecnumber/bid -I../libdecnumber
>>> -DCLOOG_PPL_BACKEND ?-I/opt//include -I/opt//include/libelf
>>> ../../trunk/gcc/graphite-clast-to-gimple.c -o
>>> graphite-clast-to-gimple.o
>>> In file included from /usr/include/cloog/cloog.h:45:0,
>>> ? ? ? ? ? ? ? ? from ../../trunk/gcc/graphite-clast-to-gimple.c:46:
>>> /usr/include/cloog/ppl_backend.h:173:18: note: originally defined here
>>> /usr/include/cloog/ppl_backend.h:190:18: note: originally defined here
>>> cc1: warnings being treated as errors
>>> ../../trunk/gcc/graphite-clast-to-gimple.c: In function
>>> 'clast_to_gcc_expression':
>>> ../../trunk/gcc/graphite-clast-to-gimple.c:167:10: error: enum
>>> constant defined in struct or union is not visible in C++
>>> /usr/include/cloog/clast.h:9:12: note: enum constant defined here
>>> ../../trunk/gcc/graphite-clast-to-gimple.c:200:10: error: enum
>>> constant defined in struct or union is not visible in C++
>>> /usr/include/cloog/clast.h:9:33: note: enum constant defined here
>>> ../../trunk/gcc/graphite-clast-to-gimple.c:225:10: error: enum
>>> constant defined in struct or union is not visible in C++
>>> /usr/include/cloog/clast.h:9:23: note: enum constant defined here
>>> ../../trunk/gcc/graphite-clast-to-gimple.c: In function
>>> 'gcc_type_for_clast_expr':
>>> ../../trunk/gcc/graphite-clast-to-gimple.c:268:10: error: enum
>>> constant defined in struct or union is not visible in C++
>>> /usr/include/cloog/clast.h:9:12: note: enum constant defined here
>>> ../../trunk/gcc/graphite-clast-to-gimple.c:279:10: error: enum
>>> constant defined in struct or union is not visible in C++
>>> /usr/include/cloog/clast.h:9:33: note: enum constant defined here
>>> ../../trunk/gcc/graphite-clast-to-gimple.c:300:10: error: enum
>>> constant defined in struct or union is not visible in C++
>>> /usr/include/cloog/clast.h:9:23: note: enum constant defined here
>>> ../../trunk/gcc/graphite-clast-to-gimple.c: In function 'find_cloog_iv_in_expr':
>>> ../../trunk/gcc/graphite-clast-to-gimple.c:718:21: error: enum
>>> constant defined in struct or union is not visible in C++
>>> /usr/include/cloog/clast.h:9:12: note: enum constant defined here
>>> ../../trunk/gcc/graphite-clast-to-gimple.c:722:21: error: enum
>>> constant defined in struct or union is not visible in C++
>>> /usr/include/cloog/clast.h:9:12: note: enum constant defined here
>>> ../../trunk/gcc/graphite-clast-to-gimple.c:725:21: error: enum
>>> constant defined in struct or union is not visible in C++
>>> /usr/include/cloog/clast.h:9:33: note: enum constant defined here
>>> make[3]: *** [graphite-clast-to-gimple.o] Error 1
>>> make[3]: Leaving directory `/home/stevenb/devel/build/gcc'
>>> make[2]: *** [all-stage2-gcc] Error 2
>>> make[2]: Leaving directory `/home/stevenb/devel/build'
>>> make[1]: *** [stage2-bubble] Error 2
>>> make[1]: Leaving directory `/home/stevenb/devel/build'
>>> make: *** [all] Error 2
>>>
>>> This is r153538, with libelfg0-0.8.10, libcloog-ppl-0.15, and
>>> libppl-0.10, and configured with "../trunk/configure --prefix=/opt/
>>> --disable-nls --enable-gold --enable-plugins --enable-lto
>>> --with-libelf=/opt/ --enable-languages=c,fortran
>>> --with-build-time-tools=/opt --enable-shared".
>>>
>>> Am I the only one seeing this problem?
>>
>> It works fine for me. ?I have in /usr/include/cloog/clast.h
>>
>> #if defined(__cplusplus)
>> extern "C"
>> ?{
>> #endif
>>
>> enum clast_expr_type { expr_term, expr_bin, expr_red };
>> ...
>>
>> so the enum is not defined inside a class.
>
> I have this also
>
>
>> I think you need
>> more recent libcloog-ppl from the infrastructure directory.
>
> I bootstrapped successfully last week and two weeks ago (see e.g.
> http://gcc.gnu.org/ml/gcc-testresults/2009-10/msg01118.html). What has
> changed that changed the behavior? I haven't seen any announcement
> that libcloog-ppl should be upgraded :-/

The configure was fixed so that graphite is enabled when the requirements
are met (obviously the checks are not rigid enough as you show), like
it is on the 4.4 branch.

The request to update cloog-ppl was alongside the C++ compat warning
changes back earlier this year (just most people didn't notice due to
the broken configure).

Richard.